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US6286571B1 - Process for sawing logs - Google Patents

Process for sawing logs Download PDF

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Publication number
US6286571B1
US6286571B1 US08/108,698 US10869893A US6286571B1 US 6286571 B1 US6286571 B1 US 6286571B1 US 10869893 A US10869893 A US 10869893A US 6286571 B1 US6286571 B1 US 6286571B1
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Prior art keywords
parallel
plane
essentially
pieces
lumber
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Expired - Fee Related
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US08/108,698
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English (en)
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Martin Wiklund
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B1/00—Methods for subdividing trunks or logs essentially involving sawing
    • B27B1/005—Methods for subdividing trunks or logs essentially involving sawing including the step of dividing the log into sector-shaped segments

Definitions

  • the present invention relates to a method of sawing a log for high yield extraction from the log of vertical-grained lumber, i.e. pieces with growth rings more or less perpendicular to the widest surfaces of the cut piece.
  • DE-C-692 987 describes a method of manufacturing an intermediate layer from plywood or similar products with vertical-graining, whereby a log is sawn with radial, longitudinal cuts into a plurality of sector- or wedge-shaped pieces of lumber, which, after tangential edging are glued together in blocks in which the wedges alternate. From the block there can then be sawn planks or sheets with vertical-graining.
  • WO 89/04747 describes a method of sawing logs where they are sawn with longitudinal radial cuts into wedge-shaped vertical-grained pieces of lumber.
  • a primary purpose of the present invention is to extract from logs, primarily logs of intermediate or large diameter, i.e. logs with a diameter of about 18 cm and above, an improved yield of vertical-grained pieces of lumber.
  • this is achieved according to the invention by sawing out pieces of not only triangular or sector-shaped cross-section but also planks with essentially parallel sides between adjacent pairs of the triangular or sector-shaped pieces.
  • the log is divided with at least two parallel, longitudinal and nearly diametrical cuts, which are parallel to the pith, to obtain at least one essentially diametrical and plane-parallel board and a pair of blocks with substantially semi-circular cross-section and, with parallel, substantially radial, longitudinal cuts, which are substantially parallel to the pith, dividing each of the blocks into at least three pieces of lumber which are essentially sector-shaped or triangular in cross-section and at least one substantially plane-parallel board between adjacent pairs of the pieces of lumber which are sector-shaped or triangular in cross-section.
  • This method of sawing provides, especially for big logs, improved yield of vertical-grained lumber which can be used as raw material for high quality construction, wood-working and furniture products.
  • the blocks divided with the parallel, nearly radial cuts are spaced at 60° angular intervals to extract from an essentially round log six substantially uniform pieces of lumber having a cross-section which is an equilateral triangle after tangentially edging of each piece of lumber, and at least five essentially plane-parallel boards.
  • the division of the log into six pieces, each having a cross-section which is an equilateral triangle they can, after drying, be either glued together to either be rip sawn in a manner known per se into desired products, preferably vertical-grained, or be used for flooring, counters or the like where an end-grained working surface is desired.
  • planar supporting surfaces on the outer surface of the log are prepared prior to division of the log, said supporting surfaces being the external sides of the pieces with triangular cross-section. These supporting surfaces can also be used to guide the log during continuing sawing.
  • FIG. 1 shows a cross-section through a log with a sawing pattern in accordance with the present invention
  • FIG. 2 shows a composite of triangular pieces of lumber into a block.
  • FIG. 1 a sawing pattern for the method according to the present invention is shown.
  • a log 10 is first edged to obtain supporting surfaces 12 for the six triangular pieces B, D, F, H, J, L, which are to be sawn out of the log.
  • the log 10 is divided by means of two parallel, nearly diametrical, longitudinal cuts 14 , 16 into two essentially semi-circular blocks 18 and 20 , and into a central, plane-parallel sheet 22 , which after edging forms a board or plank.
  • This essentially diametrical, plane-parallel board 22 is suitably cut into two pieces C, I as the central unsuitable juvenile wood N is removed.
  • This provides from each block two additional pieces D, F and J, L, each having a cross-section in the form of an equilateral triangle as well as a radial, plane-parallel sheet E, K.
  • the pieces of lumber with a cross-section which is an equilateral triangle can be glued together in a manner known per se into blocks, as shown in FIG. 2, for example, which are then sawn for example with cuts in the plane of the drawing to obtain decorative and durable sheets for a wide variety of uses.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Debarking, Splitting, And Disintegration Of Timber (AREA)
  • Drilling Tools (AREA)
  • Pinball Game Machines (AREA)
  • Air Bags (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
US08/108,698 1991-03-19 1992-03-17 Process for sawing logs Expired - Fee Related US6286571B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE9100830 1991-03-19
SE9100830A SE505056C2 (sv) 1991-03-19 1991-03-19 Förfarande för sönderdelning av stockar
PCT/SE1992/000164 WO1992016339A1 (fr) 1991-03-19 1992-03-17 Procede de sciage d'une bille de bois

Publications (1)

Publication Number Publication Date
US6286571B1 true US6286571B1 (en) 2001-09-11

Family

ID=20382217

Family Applications (1)

Application Number Title Priority Date Filing Date
US08/108,698 Expired - Fee Related US6286571B1 (en) 1991-03-19 1992-03-17 Process for sawing logs

Country Status (12)

Country Link
US (1) US6286571B1 (fr)
EP (1) EP0684898B1 (fr)
JP (1) JP3212999B2 (fr)
AT (1) ATE169257T1 (fr)
AU (1) AU659443B2 (fr)
CA (1) CA2105868C (fr)
DE (1) DE69226540T2 (fr)
DK (1) DK0684898T3 (fr)
ES (1) ES2121008T3 (fr)
FI (1) FI103486B (fr)
SE (1) SE505056C2 (fr)
WO (1) WO1992016339A1 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030029109A1 (en) * 2001-08-09 2003-02-13 Stefan Hellberg Wainscot for boarding vertical surfaces
US6648037B2 (en) 2002-03-23 2003-11-18 Wutipong Chaisang Teak board with straight-line grain and manufacturing process therefor
US20050034786A1 (en) * 2003-08-12 2005-02-17 Dargan Samuel G. Radial sawing method
US20060137765A1 (en) * 2004-10-22 2006-06-29 Olympus Corporation Method of processing wood
US20060156665A1 (en) * 2004-10-22 2006-07-20 Olympus Corporation Method of processing wood
AU2002301038B2 (en) * 2002-09-17 2008-03-20 Wutipong Chaisang Teak Wood Board with Straight-Line Grain Surface
RU2413608C1 (ru) * 2009-11-17 2011-03-10 Евгений Сергеевич Шарапов Способ раскроя круглых лесоматериалов
US20190208884A1 (en) * 2012-12-12 2019-07-11 Miguel Ortiz Automatic Nail Painting Machine
US12098555B2 (en) 2018-09-28 2024-09-24 Charles Wiebe Hand rail system and associated components and methods
WO2024226795A3 (fr) * 2023-04-25 2025-03-06 Charles Wiebe Systèmes et procédés de traitement du bois

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE9502623L (sv) * 1995-07-17 1996-07-01 Olle Oeberg Träkarm för fönster- eller dörrblad, karmstycke för dylik karm samt förfarande för framställning av sådana karmstycken
SE9602426L (sv) * 1996-06-19 1997-12-20 Primwood Ab Förfarande och press för tillverkning av limfogsskiva
FR2750636B1 (fr) * 1996-07-02 1998-11-13 Voisin Frederic Procede et dispositif d'obtention de merrains par decoupe d'une bille de bois
SE9704212L (sv) * 1996-12-13 1998-06-14 Primwood Ab Förfarande för sönderdelning av stockar
SE511577C2 (sv) * 1997-03-19 1999-10-25 Aelvsbyhus Ab Förfarande för tillverkning av långsträckta föremål samt föremål tillverkat enligt förfarandet
SE514636C2 (sv) * 1999-08-13 2001-03-26 Corexor Invest Ab Träelement för byggnadsändamål jämte förfarande för framställning av dylika träelement
SE517828C2 (sv) * 1999-12-08 2002-07-23 Primwood Ab Sågningsstation och ett förfarande för användning av sågningsstationen
EP1277552B1 (fr) * 2001-07-19 2006-05-03 Fries, Petra Procédé et dispositifs pour la découpe et le profilage des lamelles trapézoidales destinées à la construction de poutres
WO2008011677A1 (fr) * 2006-07-27 2008-01-31 Radial Corporation Limited Débitage sur quartier au moyen d'une scie à plusieurs lames
SE541538C2 (en) * 2015-06-18 2019-10-29 Stora Enso Oyj Method of producing a laminated wood product, and laminated wood products

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US186893A (en) * 1877-01-30 Improvement in methods of sawing lumber
US781376A (en) 1904-06-27 1905-01-31 Niels Georg Soerensen Manufacture of boards from logs of wood.
DE497432C (de) 1927-11-10 1930-05-08 August Hainke Verfahren zur Herstellung von Sperrbretteinlagen
DE524031C (de) 1931-05-12 Wilhelm Schroeder Verfahren zur Herstellung abgerundeter Moebelleisten-Ecken
GB434053A (en) * 1933-09-22 1935-08-26 Bedrich Slivecka Improvements in the production of built-up wood panels or boards
GB833617A (en) * 1958-02-19 1960-04-27 Mikroholz G M B H Wood veneer
JPS49116206A (fr) 1973-02-20 1974-11-06
US4239069A (en) * 1979-08-10 1980-12-16 Zimmerman Edwin H Automatic cant production machine
SU1186474A1 (ru) * 1984-04-06 1985-10-23 Всесоюзный Заочный Институт Пищевой Промышленности Способ изготовлени дубовой клепки дл резервуарной выдержки конь чных спиртов
SU1242351A1 (ru) * 1984-12-17 1986-07-07 Южный Зональный Проектный И Научно-Исследовательский Институт Сельского Строительства "Южгипронисельстрой" Способ получени клееных пиломатериалов
US4846237A (en) * 1987-04-13 1989-07-11 Johann Wolf Gmbh Kg Method and apparatus for sawing round wood trunks
EP0388507A2 (fr) 1989-03-23 1990-09-26 Berthold Fries Poutre en bois et procédé pour sa fabrication
WO1993008000A1 (fr) * 1991-10-16 1993-04-29 Hammarstroem Lars Procede pour reduire du bois en grumes
US5299400A (en) * 1992-09-24 1994-04-05 Peter Sing Converted log structural products and method

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI81986C (fi) * 1989-05-03 1991-01-10 Jaakko Tapani Lahtinen Foerfarande foer saogning av virke.

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US186893A (en) * 1877-01-30 Improvement in methods of sawing lumber
DE524031C (de) 1931-05-12 Wilhelm Schroeder Verfahren zur Herstellung abgerundeter Moebelleisten-Ecken
US781376A (en) 1904-06-27 1905-01-31 Niels Georg Soerensen Manufacture of boards from logs of wood.
DE497432C (de) 1927-11-10 1930-05-08 August Hainke Verfahren zur Herstellung von Sperrbretteinlagen
GB434053A (en) * 1933-09-22 1935-08-26 Bedrich Slivecka Improvements in the production of built-up wood panels or boards
GB833617A (en) * 1958-02-19 1960-04-27 Mikroholz G M B H Wood veneer
JPS49116206A (fr) 1973-02-20 1974-11-06
US3961654A (en) 1973-02-20 1976-06-08 Earl Dean Hasenwinkle Log cutting and rejoining process
US4239069A (en) * 1979-08-10 1980-12-16 Zimmerman Edwin H Automatic cant production machine
SU1186474A1 (ru) * 1984-04-06 1985-10-23 Всесоюзный Заочный Институт Пищевой Промышленности Способ изготовлени дубовой клепки дл резервуарной выдержки конь чных спиртов
SU1242351A1 (ru) * 1984-12-17 1986-07-07 Южный Зональный Проектный И Научно-Исследовательский Институт Сельского Строительства "Южгипронисельстрой" Способ получени клееных пиломатериалов
US4846237A (en) * 1987-04-13 1989-07-11 Johann Wolf Gmbh Kg Method and apparatus for sawing round wood trunks
EP0388507A2 (fr) 1989-03-23 1990-09-26 Berthold Fries Poutre en bois et procédé pour sa fabrication
WO1993008000A1 (fr) * 1991-10-16 1993-04-29 Hammarstroem Lars Procede pour reduire du bois en grumes
US5299400A (en) * 1992-09-24 1994-04-05 Peter Sing Converted log structural products and method

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030029109A1 (en) * 2001-08-09 2003-02-13 Stefan Hellberg Wainscot for boarding vertical surfaces
US6648037B2 (en) 2002-03-23 2003-11-18 Wutipong Chaisang Teak board with straight-line grain and manufacturing process therefor
AU2002301038B2 (en) * 2002-09-17 2008-03-20 Wutipong Chaisang Teak Wood Board with Straight-Line Grain Surface
US20050034786A1 (en) * 2003-08-12 2005-02-17 Dargan Samuel G. Radial sawing method
US7322389B2 (en) * 2004-10-22 2008-01-29 Olympus Corporation Method of processing wood
US7296604B2 (en) * 2004-10-22 2007-11-20 Olympus Corporation Method of processing wood
US20060156665A1 (en) * 2004-10-22 2006-07-20 Olympus Corporation Method of processing wood
US20060137765A1 (en) * 2004-10-22 2006-06-29 Olympus Corporation Method of processing wood
RU2413608C1 (ru) * 2009-11-17 2011-03-10 Евгений Сергеевич Шарапов Способ раскроя круглых лесоматериалов
US20190208884A1 (en) * 2012-12-12 2019-07-11 Miguel Ortiz Automatic Nail Painting Machine
US10694828B2 (en) * 2012-12-12 2020-06-30 Miguel Ortiz Automatic nail painting machine
US12098555B2 (en) 2018-09-28 2024-09-24 Charles Wiebe Hand rail system and associated components and methods
WO2024226795A3 (fr) * 2023-04-25 2025-03-06 Charles Wiebe Systèmes et procédés de traitement du bois

Also Published As

Publication number Publication date
FI103486B1 (fi) 1999-07-15
FI934080A0 (fi) 1993-09-17
AU659443B2 (en) 1995-05-18
JP3212999B2 (ja) 2001-09-25
FI103486B (fi) 1999-07-15
ATE169257T1 (de) 1998-08-15
SE9100830L (sv) 1992-09-20
WO1992016339A1 (fr) 1992-10-01
EP0684898A1 (fr) 1995-12-06
DE69226540D1 (de) 1998-09-10
DK0684898T3 (da) 1999-05-10
SE9100830D0 (sv) 1991-03-19
FI934080L (fi) 1993-09-17
SE505056C2 (sv) 1997-06-16
CA2105868C (fr) 2003-08-19
JPH06505930A (ja) 1994-07-07
EP0684898B1 (fr) 1998-08-05
DE69226540T2 (de) 1999-03-11
AU1371092A (en) 1992-10-21
CA2105868A1 (fr) 1992-09-20
ES2121008T3 (es) 1998-11-16

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Year of fee payment: 4

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Effective date: 20090911